2.6 HW
1. Where does the graph y = (x + 3)2 − 5 cross the x-axis? Homework Help ✎
2. If you were to graph the function f(x) = (x − 74)2(x + 29), where would the graph intersect the xaxis? Homework Help ✎
3. For each pair of intercepts given below, write an equation for a quadratic function in standard
form. Homework Help ✎
a. (−3, 0) and (2, 0)
b. (−3, 0) and ( ,0)
4. What is the degree of each polynomial function below? Homework Help ✎
a.
P(x) = 0.08x2 + 28x
b.
c.
f(x) = 5(x + 3)(x − 2)(x + 7)
d.
y = (x − 3)2(x + 1)(x3 + 1)
Answer Key

1. At

2. At (74, 0), a double root, and at (–29, 0)

3. Possible answers listed below:
a. y = x2 +x − 6
b. y = 2x2 + 5x − 3

4. See below:
a. 2
b. 5
c. 3
d. 6